Sight rectifier



E. QUINAN SIGHT RECTIFIER Nov. 18, 1941.

4 Sheets-Sheet 1 Filed.Nov. so, 1940 INVENTOR. EENEST Qu/A/A'N A TTOENEX Nov. 18, 1941.

E. QUINAN SIGHT RECTIFIER FIE-11- ILI Filed Nov. 30, 1940 4 Sheets-Sheet 2 ERNEST BY a INVENTOR. Quum N Nov. 18, 1941.

E. QUINAN 2,263,190

SIGHT RECTIFIER 4 Sheets-Shee 5 Filed Nov. 30,-1940 INVENTOR. EENEST Qu/NA/v BY A T TOR/V5 Y Nov. 18, 1941. E. QUINAN 2,263,196

SIGHT RECTIFIER Filed Nov. 50', 1940 4 Sheet-Sheet 4 INVENTOR. ERNEST QU/NAN ama ATTOENEK Patented Nov. 18, 1941 UNITED STATES PATENT OFF ICE SIGHT RECTIFIER Ernest Quinan, Berkeley, Calif.

Application November 30, 1940, Serial No. 367,974

22 Claims.

My invention relates to mechanism for exer cising the human eye.

My invention hereinafter described also was designed for the purpose of diagnosing and remedying the various ailments of the human eye that are not of a degenerative nature, but are due, rather, to tension and imbalance of the extrinsic muscles.

Another object of my invention is to furnish a positive, measurable and unvarying mechanical means for attaining the ends proven possible, through the research and discoveries of the late Dr. William Horatio Bates, whose work, Perfect Sight Without Glasses, has been microfilmed for interment in The Crypt of Civilization by Oglethorpe University of Georgia.

A suitable target conducts the eyes through every directional movement of which they are capable, namely: to and fro, vertical, oblique, transverse and circular, and both speed and extent of such movements are under instant control, since the machine is manually operated, as it preferably should be, to attain the ends desired. The object of these various movements when used in'conjunction with certain methods of inducing muscular relaxation, is to relieve abnormal muscular tension, thus allowing the eyeball to regain its natural spherical shape when at rest.

For example, each eye has four recti and two gether their constricting effort elongates the eyeball to the degree necessary for close vision. Thus, these two sets of muscles cause the eye to accommodate itself for near or distant vision preoiselyas a camera is focussed on a near or distant object.

(a) If, for any reason, the four recti muscles remain in a contracted state holding the eyeball in a flattened position so that light rays reflected from objects close at hand come to a point back of, instead of on, the retina, hyperopia (farsightedness) is produced, with print and nearby objects blurred.

Acting in (b) If, on the other hand, the two obliqui muscles remain contracted, permanently elongating the eyeball so that light rays reflected from distant objects come to a point before reaching the retina, myopia (shortsightedness) is produced and distant objects are blurred.

(c) If, with vision otherwise normal, there is a more or less constant pull on the part of one or more muscles resulting in corneal deformation, astigmatism (confused imperfect image) is produced which becomes hyperopic-astigmatism if in conjunction with (a) or myopic-astigmatism if in conjunction with (b), etc., etc.

(d) Finally, if the muscles of the two eyes do not act in perfect harmony, the eyes may either cross (convergent squint or strabismus), diverge (divergent squint or strabismus), have vertical imbalance (vertical squint or strabismus), or a combination of one and three or two and three. I

When Dr. Bates discovered and conclusively proved, that the extrinsic muscles of which we have been speaking were alone responsible for accommodation and not the intrinsic ciliary muscles and lens, he soon after also discovered that these muscles could be made to release their abnormal tension by certain means of relaxation, thus permitting the eyeball to resume its normal shape and the muscles their elasticity and functions. The device hereinafter described supplies means for effecting this rectification of sight.

Broadly, the object of my invention is to provide an apparatus capable of moving a target carriage at will, in various directions. More particularly, my invention resides in the combination of a guide member, on which the carriage slides, with suitable parts which render it capable of movement in several planes and at various selected angles.

My invention will now be described with reference to the drawings forming a part hereof, in which:

Fig. 1 is a side elevational view of the machine with stereoscope attached;

Fig. 2 is a side elevational view, partly in section;

Fig. 3 is an enlarged vertical sectional detail view taken at right angles to Fig. 1;

Fig. 4 is an enlarged sectional detail view of the saddle, showing the bearings and parts mounted thereon;

Fig. 5 is an enlarged detail view of the targetarm-lock-stop with the parts spaced away vertically for clarity;

Fig. 14 is a face view of target-carriage as-,

semblage and Fig. 15 is a view in perspective of the gear housing. I H r In the above drawings the invention is shown as comprising a rigid three-point base 20, collapsible for shipp ng, whose square, tubular, vertical member 2| receives and provides adjustment for, a second or adjusting tube 22 of similar length, with holes drilled through Opposite sides at equidistant intervals 23 to receive locking pin 24. This adjusting tube slip-fits into the lower end of the main-upright member 25, being held in place by suitable screws 26, hence is detachable for telescoping into the base to form one of the two units into which machine is reduced for shipment. The left side of main-upright 25 just above its point of connection with adjustingtube 22, is drilled and hushed to receive one end of crank-shaft 21, the opposite side having an opening large enough to permit entry or withdrawal of pinion-gear 23 attached to shaft. A flanged and bushed member 29 (see Fig. 3) fitting into this opening and held in place by screws 36,

provides the second or main bearing for crankshaft 2'1. The latter extends beyond the exterior face of main-bearing in 29 and is drilled, split and threaded both inside and out, to receive expanding-screw 32. The latter serves to attach the drilled and threaded crank 33 with handle 34.

Fastened to the upper extremity of main-upright 25 on its right and left sides are two steel discs 35 (see Fig. 3) with centers drilled to receive a bolt-shaft 36, the threaded end of which carries a knurled nut 3'1. An inverted U-shaped member or saddle 38 whose parallel sides 39 are of a shape and distance apart for their inner sur- 'as well to hold in place a hollow steel shaft 46.

The two ends of shaft 46 impinge against the opposite sides of main-upright 25 and act as a spacer against the pressure created when knurled nut 3'! is tightened to provide the friction necessary to hold saddle 38 in any desired position. The exterior of spacer-tube 40 forms the bearing for the bronze tube 4| on one end of which main bevel gear 42 is pressed. Two short lengths of round bronze 43 whose O. D. form easy press-fit.

with the interior walls of main-upright 25 have their centers drilled to act as bearings for shaft 44. A pinion-gear 45 is mounted on said shaft and meshes with main bevel-gear 42, and at its lower end a bevel-gear 46 is mounted to mesh with pinion-gear 28 on crankshaft 21. Gears 45 and 46 are held in place and adjusted by set screws, as are collars 41, so that the bearings, gears and shaft form a unit, that may be inserted or withdrawn from interior of main-upright 25 when bolt-shaft 36 and main bevel-gear assemblage have been removed, an operation requiring but a few seconds. A metal strip 43 provides a gear-housing (see Figs. 2, 3 and 15). It is slotted along its center 50 and this slot is enlarged at 49 to permit passage of pinion gear 42. The strip fits around the perimeter of discs 35 and its two ends are attached to the face and back of main-upright 25 by screws 5|.

Attached to top of saddle 38 by four screws 52 and paralleling its two sides 39 is a square hollow cross-bar 53, to the front end of which may be attached a suitably adapted stereoscope 54 (see Fig 1). Both cross-bar 53 and saddle 38 are drilled at mid-length to receive a bronze bushing 55 which extends slightly beyond thewalls of the hole at either end to act as spacers and thrust bearings. Paralleling the cross-bar 53 and slightly above is a solid square target-arm 56 (see Fig. 4) which is thicker near its middle. Its ends are turned upward to form right-angle bends 51. The end of arm 56 nearest the operator (see Fig. 5) has a hole 53 drilled in the face of the bend for reception of slidinglock-stop 59 situated directly beneath on cross-bar 53. When locked, it holds arm 56 rigidly in place to protect the bearing against strain or stress.

A 24 inch scale 66, preferably with black figures on white background, is fastened to the right side of target-arm 56. Said arm 56 is drilled at midlength to receive a press-fit hollow bronze shaft 6 I A semi-circular indexing band 62 has its two ends fastened to target-arm 56 on either side of center 62 and it has four holes 63, each of which may in turn be made to register with a springactuated stop 64 (see Figs. 4, 6 and '7) situated directly beneath in cross-bar 53. Thus, when the cross bar 53 is in vertical position Fig. 8, the target-arm 56 may be held selectively in vertical 56a, in transverse 56b, or in either of two oblique positions 56-0, 56d.

This same positioning is possible, even with the omission of the band 62 and stop 64, by having the patient sit facing the machine as shown in Fig. 1 and then placing the target on the carriage 96 which can be rotated to where it holds the target facing the patient. Then to get any desired angularity of traverse the arms 53 and 60 are tilted as a unit about the pivot 36.

Passing up through target-arm-bearing (see Fig. 4) is a shaft 16. This has a collar H near its lower end which contacts the lower end of bushing 55 through cross-bar and saddle. Below collar H is attached the regulating pinion-gear 52 which meshes with main bevel-gear 42. The upper end of shaft l6 screws into the center of main-pulley l3 and is held in place by lock-nut 13-0.. The perimeter of pulley 13 has a helical groove 14 instead of the usual connected V groove. On its under side are provided a series of equidistant indexing holes 15 for reception of a stop mounted in target arm 56. When the target is in a chosen position the stop 16 is entered into nearest hole 75, then the arm 56 and pulley l3 revolve as a unit in circles (Fig. 10, 56-e) provided both stops 59 and 64 in cross-bar 53 have been disengaged to liberate arm 55 for the purpose. Due to the friction of the drive and the friction of the carriage 83 on rod 18 it is possible to obtain this circular motion without engaging the stop 16. A square target-rod 18 (see Fig. 2)

is fastened to the upturned ends 51 of target-arm 56, thus paralleling the latter throughout its length. The upturned ends 51 are slotted to accommodate small idler-pulleys 19. Thus, cable 86, after passing around mainpulley l3, and through eyelets 8| set in arm 56, will pass just above and parallel with arm 56 to, and under idler-pulleys 19, around and over top of same to connect with each end of. target-carriage base at 82.

The target-carriage base 83 is formed of a section of square tubing of a size to slide freely upon target-rod 18. Its upper face is reinforced at 84 to allow for counter-boring from under side to depth necessary for recessing screw-head 85, which serves'to secure rotatably to base 83 a section of round metal or pedestal 86; A short distance above its base (see Fig. 14) pedestal 86 is drilled at right-angles to its sides for reception of a short tube 88, which in turn houses a snug fitting bar 89, the ends of which as they emerge from tube 88 are flattened and drilled to receive and have soldered in place, bronze spring-wire target-grips 90 which may thus be tilted to any plane while carriage is rotated on pedestal to any desired angle. The bottom of carriage base 83 is slit in from its ends and the metal between cuts turned down at right-angles to bottom 9| and drilled to receive the cable-ends 86.

From the foregoing description, the operation of my device will be readily understood. Assuming (a) that the type of exercise desired is one in which the target is advanced on a horizontal plane to and from the eyes, the device will be substantially in the position shown in Fig. 1. In this position, with lock-stop 59 and target-armstop 64 engaged, turning crank 34 will actuate pinion-gear 21, bevel-gear 46 (in ratio of two to one) shaft 44, pinion-gear 45, main bevel-gear 42, pulley pinion-gear "I2 and main-pulley 13 causing cable 80 around periphery of pulley after passing through eyelet and around idler-pulley, to move target-carriage 83 (Fig. 14) on its rod 18, in the direction crank is being turned either to or from eyes (with or without stereoscope attached).

Assuming (b) that it is desired to have target travel on a vertical plane, cross-arm 53 will be turned to a vertical position in either of the ways suggested above (Fig. 8, 53a) and target similarly adjusted, whereupon, movement of crank 34 will be transmitted to target carriage 83 in the identical manner described in (a), now

causing target to travel in a vertical instead of horizontal plane.

Assuming (a) that it is desired to have target travel in a transverse or in either of the oblique directions shown in Fig. 8, lock-stop 59 (Fig.5) will be disengaged and with target-arm-stop 64 withdrawn, target-arm will be turned to either 56-'b, --c, or -d positions and stop 64 re-engaged. The target-pedestal 86 is then adjusted to a horizontal positions, whereupon movement of crank will again be transmitted as in (a) and (b), causing target to pursue whichever of the The latter is moved Then the target is suitfollowed through all their, vagaries.

movements described under(b), (c) and (d) are target set in circular motion as shown in Fig. 10. 56--e, target will be moved to the position on its rod 18 corresponding with circumference of circle desired, pulley-stop 16 is entered into nearest hole 15, target-pedestal is set atright-angle to targetrod and target-arm-stop 64 is disengaged, whereupon movement of crank 34 will be transmitted to main pulley 13 as in (a) and will cause main pulley and target arm to revolve as a unit in whichever direction desired.

In all movements save the last-above enumerated, the position of target in relation to its distance from the eye or eyes,as in (a) or, when crossing the field of vision in various planes as in (b) and (c), is shown by scale in inches fastened to target-arm Fig. 5, 66. It follows, therefore, that in (a) with stereoscope attached, the point of convergence, its extent and fluctuations, may be definitely established and results of treatment ascertained. In (a) with stereoscope detached, the visual acuity of either eye or the two in conjunction may be measured, the location and extent of blurring in myopia and hyperopia determined, and the location and ex-- tent of astigmatic periods definitelydefined and The various principally used for inducing muscular-coordination following exercise for some specific imbalance.

While I have described and illustrated a preferred form of my invention to comply with the statute, I do not thereby intend to give up any other form in which it may be embodied, provided such modification contains the essence of my invention as set forth in the attached 7 claims.

For example, where I have shown a gear drive in the base to the pulley 12, a cable drive or a Bowden wire may be substituted, while still retaining my invention. Likewise, a worn drive along arm 56 may be substituted. Others may vary the structure by omitting certain of its functions, such as being able to tilt bar 53 to a vertical position and still retain my invention. The permissible variations are many, which still retain my invention.

What I claim is:

1. In an eye exercising machine, the combination of a supporting means, a crankshaft mounted therein, a shaft extending vertically in said supporting means with bevel gears on each end, a bevel gear on said crankshaft engaging one of said gears, an arm pivotally secured to said supporting means, a shaft extending transvers'ely through said arm and having a bevel gear on one end, a bevel gear mounted concentric with the pivotof said arm and supporting means and in engagement with said last-named bevel gear and with the other bevel gear on the shaft in said supporting means, a second arm adjacent said first named arm and pivoted for movement in a plane parallel therewith, a target carrying means movable along said second arm, a drive pulley adjacent said arm and secured to the shaft extending through the first named arm, idler pulleys mounted along the second arm, a cable passing around said drive pulley over said idler pulleys and connected to opposite ends of said target means, locking means for securing said arms together in several angularly spaced positions, and a second locking means for securing said second arm to said drive pulley when said first named locking means is disengaged.

2. In an eye exercising machine, the combination of a support, an operating lever mounted in said support, an arm pivoted to said support, a second arm mounted for movement in a plane parallel with and adjacent to the first arm, a target carrying means supported for movement over said second arm, a drive means connecting said operating lever and said target means whereby the latter may be made to move over said arm, and a lock means between said drive and said second arm, which, if engaged, will transmit the movement of said operating lever to cause said arm to rotate and said target means will remain stationary over said arm.

3. In an eye exercising machine, the combination of a support, an operating lever mounted in said support, an arm pivoted to said support, a second arm mounted for movement in a plane parallel with and adjacent to the first arm, a target carrying means supported for movement over said second arm, a drive means connecting said operating lever and said target means whereby the latter may be made to move over said arm, a locking device for securing together said first and second arms when it is desired that said target means move over its arm, and a lock means between said drive and said second arm, which, if engaged, will transmit the movement of said operating lever to cause said arm to rotate and said target means will remain stationary over said arm.

4. In an eye exercising machine, the combination of a base, an arm pivoted thereon for adjustment either side of a horizontal position, a second arm pivoted to said first named arm and adapted to rotate about said pivot in a plane parallel with the latter arm, locking means for uniting said arms for simultaneous movement, a target carrying means movable in a straight path, along said second arm when it is locked to said first arm, and movable in a circular path with said second arm when said locking means is disengaged, a drive therefor, mounted in said base, and transmission means in the pivot of said first named arm and base for communicating said drive to said target means.

5. In an eye exercising machine, the combination of a base, an arm pivoted thereon for adjustment either side of a horizontal position,

a second arm pivoted to said first named arm and adapted to rotate about said pivot in a plane parallel with the latter arm, locking means for uniting said arms for simultaneous movement, a target carrying means movable in a straight path along said second arm when it is locked to said first arm, and movable in a circular path with said second arm when said locking means is disengaged, a drive therefor, mounted in said base, transmission means in the pivot of said first named arm and base for communicating said drive to said target means, comprising a pulley mounted adjacent said second arm and connected to said transmission means, and a cable drive to said target.

6. In an eye exercising machine, the combination of a base, an arm pivoted thereon for adjustment either side of a horizontal position, a second arm pivoted to said first named arm and adapted to rotate about said pivot in a plane parallel with the latter arm, locking means for uniting said arms for simultaneous movement, a target carrying means movable in a straight path along said second arm when it is locked to said first arm, and movable in a circular path with Lil said second arm when said locking means is disengaged, a drive therefor, mounted in said base, transmission means in the pivot of said first named arm and base for communicating said drive to said target means, comprising a pulley mounted adjacent said second arm and connected to said transmission means, a cable drive to said target, means for locking said pulley to said second arm whereby they may be rotated in unison, when the locking means between said two arms is released.

7. In an eye exercising machine, the combination of a supporting means, a crankshaft mounted therein, a shaft extending vertically in said supporting means with bevel gears on each end, a bevel gear on said crankshaft engaging one of said gears, an arm pivotally secured to said supporting means, a shaft extending transversely through said arm and having a bevel gear on one end, a bevel gear mounted concentric with the pivot of said arm and supporting means and in engagement with said last-named bevel gear and with the other bevel gear on the shaft in said supporting means, a second arm adjacent said first-named arm and pivoted for movement in a plane parallel therewith, a target carrying means movable along said second arm, a drive pulley adjacent said arm and secured to the shaft extending through the first named arm, idler pulleys mounted along the second arm, a cable passing around said drive pulley over said idler pulleys and connected to opposite ends of said target means, locking means for securing said arms together, and a second locking means for securing said second arm to said drive pulley when said first named locking means is disengaged.

8. In an eye exercising machine, the combination of a supporting means, a crankshaft mounted therein, a shaft extending vertically in said supporting means with bevel gears on each end, a bevel gear on said crankshaft engaging one of said gears, an arm pivotally secured to said supporting means, a shaft extending transversely through said arm and having a bevel gear on one end, a bevel gear mounted concentric with the pivot of said arm and supporting means and in engagement with said last-named bevel gear and with the other bevel gear on the shaft in said supporting means, a second arm adjacent said first named arm and pivoted for movement in a plane parallel therewith, a target carrying means movable along said second arm, a graduated scale on said arm lying adjacent and parallel with the path traversed by said target carrying means, a drive pulley adjacent said arm and secured to the shaft extending through the first named arm, idler pulleys mounted along the second arm, a cable passing around said drive pulley over said idler pulleys and connected to opposite ends of said target means, locking means for securing said arms together, and a second locking means for securing said second arm to said drive pulley when said first named locking means is disengaged.

9. In an eye exercising machine, the combination of a support, an operating lever mounted in said support, an arm pivoted to said support, a second arm mounted for movement in a plane parallel with and adjacent to the first arm, a target carrying means supported for movement over said second arm, a drive means connecting said operating lever and said target means whereby the latter may be made to move over said arm, a graduated scale on said arm lying adjacent and parallel with the path traversed by said target carrying means, and a lock means.

between said drive and said second arm, which, if engaged, will transmit the movement of said operating lever to cause said arm to rotate and said target means will remainstationary over said arm. i

10. In an eye exercising machine, the combination of a base, an arm pivoted thereto, a clamping member by which said arm is fixediy held in position on said base at horizontal, or at any angle at either side of horizontal that may be desired, a secondary arm pivotally mounted to said first mentioned arm, a target carrying track mounted on said secondary arm, a target carrying means mounted on said track for slidable movement on said track, a pulley rotatably mounted on a shaft, said shaft being the pivotal means by which said first and second armsare pivotally mounted one on the other, a crank, a transmission means transmitting the power applied to said crank to rotate said pulley, a belt co-acting with said pulley, said belt being attached to said target carrying means andproviding the means by'which said target carrying means is propelledon its track.

11. In an eye exercising machine, of the character described, the combination of a support, an arm mounted at one end of said support, said mountings including a clamp member by which said arm may be rigidly clamped to said support at any of the many angles desired, a frame comprising two parallel strips, spaced apart and fixedly attached to each other by means of connecting strips riveted to the two strips at the ends thereof, said frame being pivotally attached to said arm by a pin upon which said frame can for engaging a belt, or cable, said cable being at- "-1 tached to the target carrying means, means for actuating the said pulley or sheave causing same to rotate and in turn to drive the belt in one direction, thus carrying the target carrying means along its track, and which target means may be returned by reversing the rotation of said sheave, means provided by an arrangement of gears, pinions, and shafts to transmit the power for rotating the pulley or sheave, said transmission means being so arranged as to rotate the sheave in either direction and in any position the said arm may be fixed with relation to the support.

12. In an eye exercising machine, the combination of a support, a tubular column mounted on said support, a crank mounted on said tubular column, a shaft and bevelled pinion actuated by said crank, a shaft with bevelled pinion atone end co-acting with said bevelled pinion on said crank actuated shaft, a bevelled pinion on the other end of said shaft, said pinion co-acting with a bevelled gear mounted on a tubular shaft, a pinion co-acting with said bevelled gear and so mounted as to extend in opposite direction from the other said bevelled pinion co-acting withsaid gear, a shaft connected to said pinion and driven by said pinion, said shaft having mounted thereon a master pulley or sheave, a belt co-acting therewith, said. belt being attached to a target carrying means, said target carrying means being mounted on a suitable track to permit its sliding along said track by the force conveyed by the said belt, said track member being pivotally mounted to an arm pivotally mounted on said tubular column by means of a clamping member attached to said arm, means for locking said track member and said arm together, said clamp pinned to said column by means of a bolt extending through holes in the clamp and corresponding holes in the column, said bolt being threaded to receive a nut, a tubular spacer sleeve mounted on said bolt, said tubular shaft mounted on said tubular spacer, the clamping members actuatedby tightening or loosening of said nut, thereby enabling change of angularity of said arm to horizontal or to any positioneither side of horizontal desired, and held rigidly to such position.

13. In combination, an eye exercising machine of the character described, a tubular support, a bearing in said support, a shaft mounted horizontally in said bearing, a bevelled pinion attached to said horizontal shaft, means for rotating said shaft, a bevelled pinion mounted on a vertical shaft and co-acting with said pinion on said horizontal shaft, said vertical shaft being mounted in bearings within said tubular support, a beveled pinion mounted on upper end of said vertical shaft and co-acting with a bevelled gear mounted on a tubular shaft and keyed thereto, said tubular shaft being rotatablymounted on a tubular spacer sleeve or bearing, a yoke or saddle provided with a bearing surface and two downwardly projecting wings, a hole through each of said wings to receivea bearing pin, said bearing pin consisting of the said tubular gear shaft, and said tubular spacer sleeve, and a retaining bolt having a head on one end, and a thread on the other end, a nut to co-act with said thread, said bolt being the means of assembling the said bevelled gear, and its tubular shaft and its spacer sleeve between said wingsof said yoke, and bolting them to said tubular support, performing the dual purpose of providing a bearing for said bevelled gear, and an adjustableclamping means by which said yoke may be fixed at horizontal or to various angles either side of horizontal, and mounted on said yoke a target carrying member, a track for said member, and means actuated by said pinions, shafts and gears for propelling the said target carrying member on its track. a

14. In an eye exercising machine, the'combination of a support, an operating lever mounted in said support, a cross-arm secured to said sup: port, a target arm mounted above substantially parallel to said cross-arm, a shaft extending through said arms, whereby one may be rotated end over end about a single point in a plane parallel to the other, a target carrying means movable along said target arm, a drive means combined with said shaft for moving said target along said target arm by said operating lever.

15. In an eye exercising machine, the combination of a support, an operating lever mounted in said support, a cross-arm secured to said support, a target arm mounted above substantially parallel to said cross-arm, a shaft extending through said arms, whereby one may be rotated end over end about a single point in a plane parallel to the other, a target carrying means movable along said target arm, a-graduated scale arranged adjacent the path of said target carrying means, a drive means combined with said shaft for moving said target along said target arm by said operating lever. i i

16. In an eye exercising machine, the combination of a base, a support mounted in said base, an operating lever mounted insaid support, a

cross-bar pivoted to said support, a target arm mounted for movement in a plane parallel with and adjacent to the said cross-bana target carrying means supported .for movement on said target arm, a drive means connecting said operating lever and said target means whereby the latter may be made to move over said target arm, said pivoted cross bar means comprising a clamp mounted to said support by a bolt connecting same to the support in such a way as to permit the clamp to rotate on the said bolt, said clamp forming a saddle on which is mounted the said cross-bar and said target arm, a transmission means, said transmission means consisting of a vertical shaft, an upwardly projecting bevelpim'on at the upper end of said shaft, said pinion coacting with and driving a bevel master gear, said master gear mounted for rotation on the said bolt for said clamp, a bevel-pinion driven by said master bevel-gear and mounted on a vertical shaft, which shaft is mounted in the upper face of said clamp or saddle, a sheave or pulley mounted on upper end of said shaft, and rotated by said shaft, a locking device for securing together said cross-bar and said target-arm when it is desired that said target means move over its arm, and a lock means between said drive means and said target arm, which, if engaged, will transmit the movement of said lever to cause saidtarget arm to rotate and said target means will remain stationary over said target arm.

17. In an eye exercising machine, the combination of a base, a vertical support mounted in said base, means for adjusting the length of said support, an operating lever mounted in said support, a flanged saddle member comprising a clamp, pivotally mounted to said support by means of a bolt, said bolt extending through holes in the flanges of said saddle or clamp and corresponding holes in the said support, said bolt being provided with a thread and a nut by which the clamp may be rigidly locked, or may be loosened to permit of readjustment of said saddle to different angles with relation to the said support, said saddle supporting a cross-bar, a target arm mounted to said cross-bar, a target member mounted on said target arm, a track for said target member, said track being mounted to said target arm, a power transmitting means, said transmission means including a master bevel gear rotatably mounted on said adjustable bolt upon which said saddle is mounted, said master bevel gear being driven by a bevel pinion and shaft, said bevel master gear in turn driving a bevel pinion and shaft mounted in said saddle and said cross-bar, and rotating a sheave or pulley attached to last mentioned shaft, and by which arrangement of bevel pinions, bevel gear, and shafts, the power applied to said lever is transmitted to actuate or rotate the target arm, and said pulley or sheave at any angle with reference to the said support that said cross-bar, target arm, and said pulley may be set and locked by said pivotally mounted clamp or saddle.

18. In an eye exercising machine, the combination of a base, a support mounted in said base, a cross-bar pivoted to said support for adjustment to horizontal position or to either side of a horizontal position, a target arm pivotally mounted above said cross-bar, locking means for connecting said cross-bar with said target arm, a target carrying means movable along said target arm,-a drive therefor consisting of a movable cable actuated by a rotating sheave or pulley, said sheave or pulley being mounted on a shaft, said shaft mounted within holes in said cross-bar and said target arm, said shaft and pulley being actuated by a bevel pinion mounted on said shaft,

said bevel pinion driven by a bevel gear rotatably mounted on an adjustable pin or bolt, a flanged clamp forming a saddle for said crossbar, said clamp being pivotally mounted to said support by the said adjustable bolt extending through corresponding holes in the said clamp and the said support, said bolt having threads and a nut to enable tightening or loosening of said clamp, a shaft and bevel pinion co-acting with said master bevel gear for transmitting the power applied to a lever or crank, by which arrangement of gears, pinions, and shafts, said power is transmitted to actuate said target arm, and said pulley at any angle to which the said cross-bar may be adjusted and locked by said clamp.

19. In an eye exercising machine, the combination of a supporting means, a flanged clamp member attached to said support by an adjustable bolt extending through holes in the flanges of said clamp and through said support, said bolt being provided with a thread and a nut for tightening or loosening said clamp, said clamp forming a saddle on which is mounted a cross-bar, a target arm mounted above said cross-bar, a sheave or pulley keyed to a vertical shaft, said shaft extending through holes in said target arm and said cross-bar, thus providing a pivotal mounting for said target arm and said crossbar; and through a hole in upper face of said clamp or saddle; a master bevel gear rotatably mounted on said adjustable bolt, said gear coacting with and driving a bevel pinion on said pulley shaft, a bevel pinion co-acting with said master bevel gear, suitable shaft and bearings and bevel gears for transmitting power applied to a lever mounted in said support and by which arrangement of shafts, pinions, and gear, power is transmitted to rotate said target arm, and pulley at any angle with reference to the said support that the cross-bar, target arm, and pulley may be set and locked by the clamping device, a target mounted on said target aim, means for transmitting power by rotation of said pulley to cause said target to move to and fro on said target arm.

20. In an eye exercising device, the combination of a base, a support mounted in said base, a flanged clamp member pivotally mounted to the upper end of said support, said mounting consisting of an adjustable bolt extending through holes in the flanges of said clamp and through holes in the upper end of the said support, said bolt being provided with a thread and a nut by which said flanges of said clamp may be tightened or loosened on said support, said clamp forming a saddle on which is fixedly mounted a cross-bar, a target arm mounted above and adjacent to said cross-bar, a shaft, a pulley attached to said shaft, said shaft projecting through a cylindrical bearing in said target arm to serve as a mounting for said target arm, a bearing to permit of rotation of said target arm on said shaft, said shaft extending through a cylindrical bearing in said cross-bar, and projecting through a hole in the upper face of said saddle or clamp, a bevel pinion mounted on lower end of said shaft, a master bevel gear rotatably mounted on the said adjustable bolt, said master bevel gear in engagement with and driving the last said bevel pinion, said master bevel gear being driven by a bevel pinion in engagement therewith, said bevel pinion being mounted on a shaft, said shaft mounted in suitable bearings in the said support, said shaft being driven by bevel gears and by which arrangement of gears and shafts and master gear power applied to a lever or crank mounted on said support is transmitted to drive said pulley, said pulley by means of a cable and idler pulleys to move said target, or to rotate said target arm I on its bearing, and by the adjustable means of said pivoted connection between the said crossbar and the said support, the said target arm, the said pulley shaft, and said pulley may be actuated at various angles with relation to the said support.

21. An eye exercising machine, the combination of a support, an operating lever mounted on said support, a vertical pulley shaft, a pulley attached t the upper end of said vertical pulley shaft, a target arm rotatably mounted on said pulley shaft, a cross-bar, said pulley shaft projecting through said cross-bar, an adjustable pivot clamp member, said cross-bar being mounted on a bearing on the upper face of said pivot clamp member, said clamp member being attached to the upper end of said support by an adjustable bolt projecting through holes in flanges of said clamp member and through correspondin hOles in said support, said clamp being rotatably mounted on said bolt for adjustment of said cross-bar, said target arm, said pulley shaft and said pulley, at various angles relative to said support, a bevel pinion mounted on lower end of said pulley shaft, a master bevel gear loosely mounted on said adjustable bolt, said master gear engaging said bevel pinion on lower end of said pulley shaft to drive said pulley shaft, means for transmitting power from said lever through said bevel gear and said pinsaid clamp and through corresponding holes in said support, said bolt bein provided with a thread and a nut by which said clamp'may be tightened or loosened on said support, a crossbar mounted on the said flanged clamp and attached thereto, a target arm mounted immediately above said cross-bar, a pulley, a shaft for said pulley, said pulley mounted on the upper end of said pulley shaft, said pulley shaft projecting downwardly through holes in said target arm and said cross-bar and in said adjustable clamp, a bevel pinion on the lower end of said pulley shaft, said bevel pinion and pulley shaft and pulley being rotated by a master bevel gear mounted on said adjustable bolt and co-acting with said bevel pinion, said masterbevel gear being actuated by power transmitted from said crank, and by which means said target arm may be caused to rotate on a common center with said pulley shaft and the said pulley todrive a cable or belt to move a target to and fro on said target arm, and by adjustment of said adjustable clamp said operations maybe obtained in various angles of adjustment.

ERNEST QUINAN. 

